-// XZip.h Version 1.3

-//

-// Authors: Mark Adler et al. (see below)

-//

-// Modified by: Lucian Wischik

-// lu@wischik.com

-//

-// Version 1.0 - Turned C files into just a single CPP file

-// - Made them compile cleanly as C++ files

-// - Gave them simpler APIs

-// - Added the ability to zip/unzip directly in memory without

-// any intermediate files

-//

-// Modified by: Hans Dietrich

-// hdietrich@gmail.com

-//

-///////////////////////////////////////////////////////////////////////////////

-//

-// Lucian Wischik's comments:

-// --------------------------

-// THIS FILE is almost entirely based upon code by info-zip.

-// It has been modified by Lucian Wischik.

-// The original code may be found at http://www.info-zip.org

-// The original copyright text follows.

-//

-///////////////////////////////////////////////////////////////////////////////

-//

-// Original authors' comments:

-// ---------------------------

-// This is version 2002-Feb-16 of the Info-ZIP copyright and license. The

-// definitive version of this document should be available at

-// ftp://ftp.info-zip.org/pub/infozip/license.html indefinitely.

-//

-// Copyright (c) 1990-2002 Info-ZIP. All rights reserved.

-//

-// For the purposes of this copyright and license, "Info-ZIP" is defined as

-// the following set of individuals:

-//

-// Mark Adler, John Bush, Karl Davis, Harald Denker, Jean-Michel Dubois,

-// Jean-loup Gailly, Hunter Goatley, Ian Gorman, Chris Herborth, Dirk Haase,

-// Greg Hartwig, Robert Heath, Jonathan Hudson, Paul Kienitz,

-// David Kirschbaum, Johnny Lee, Onno van der Linden, Igor Mandrichenko,

-// Steve P. Miller, Sergio Monesi, Keith Owens, George Petrov, Greg Roelofs,

-// Kai Uwe Rommel, Steve Salisbury, Dave Smith, Christian Spieler,

-// Antoine Verheijen, Paul von Behren, Rich Wales, Mike White

-//

-// This software is provided "as is", without warranty of any kind, express

-// or implied. In no event shall Info-ZIP or its contributors be held liable

-// for any direct, indirect, incidental, special or consequential damages

-// arising out of the use of or inability to use this software.

-//

-// Permission is granted to anyone to use this software for any purpose,

-// including commercial applications, and to alter it and redistribute it

-// freely, subject to the following restrictions:

-//

-// 1. Redistributions of source code must retain the above copyright notice,

-// definition, disclaimer, and this list of conditions.

-//

-// 2. Redistributions in binary form (compiled executables) must reproduce

-// the above copyright notice, definition, disclaimer, and this list of

-// conditions in documentation and/or other materials provided with the

-// distribution. The sole exception to this condition is redistribution

-// of a standard UnZipSFX binary as part of a self-extracting archive;

-// that is permitted without inclusion of this license, as long as the

-// normal UnZipSFX banner has not been removed from the binary or disabled.

-//

-// 3. Altered versions--including, but not limited to, ports to new

-// operating systems, existing ports with new graphical interfaces, and

-// dynamic, shared, or static library versions--must be plainly marked

-// as such and must not be misrepresented as being the original source.

-// Such altered versions also must not be misrepresented as being

-// Info-ZIP releases--including, but not limited to, labeling of the

-// altered versions with the names "Info-ZIP" (or any variation thereof,

-// including, but not limited to, different capitalizations),

-// "Pocket UnZip", "WiZ" or "MacZip" without the explicit permission of

-// Info-ZIP. Such altered versions are further prohibited from

-// misrepresentative use of the Zip-Bugs or Info-ZIP e-mail addresses or

-// of the Info-ZIP URL(s).

-//

-// 4. Info-ZIP retains the right to use the names "Info-ZIP", "Zip", "UnZip",

-// "UnZipSFX", "WiZ", "Pocket UnZip", "Pocket Zip", and "MacZip" for its

-// own source and binary releases.

-//

-///////////////////////////////////////////////////////////////////////////////

-

-#ifndef XZIP_H

-#define XZIP_H

-

-// ZIP functions -- for creating zip files

-// This file is a repackaged form of the Info-Zip source code available

-// at www.info-zip.org. The original copyright notice may be found in

-// zip.cpp. The repackaging was done by Lucian Wischik to simplify its

-// use in Windows/C++.

-

-#ifndef XUNZIP_H

-DECLARE_HANDLE(HZIP); // An HZIP identifies a zip file that is being created

-#endif

-

-typedef DWORD ZRESULT; // result codes from any of the zip functions. Listed later.

-

-// flag values passed to some functions

-#define ZIP_HANDLE 1

-#define ZIP_FILENAME 2

-#define ZIP_MEMORY 3

-#define ZIP_FOLDER 4

-

-

-///////////////////////////////////////////////////////////////////////////////

-//

-// CreateZip()

-//

-// Purpose: Create a zip archive file

-//

-// Parameters: z - archive file name if flags is ZIP_FILENAME; for other

-// uses see below

-// len - for memory (ZIP_MEMORY) should be the buffer size;

-// for other uses, should be 0

-// flags - indicates usage, see below; for files, this will be

-// ZIP_FILENAME

-//

-// Returns: HZIP - non-zero if zip archive created ok, otherwise 0

-//

-HZIP CreateZip(void *z, unsigned int len, DWORD flags);

-// CreateZip - call this to start the creation of a zip file.

-// As the zip is being created, it will be stored somewhere:

-// to a pipe: CreateZip(hpipe_write, 0,ZIP_HANDLE);

-// in a file (by handle): CreateZip(hfile, 0,ZIP_HANDLE);

-// in a file (by name): CreateZip("c:\\test.zip", 0,ZIP_FILENAME);

-// in memory: CreateZip(buf, len,ZIP_MEMORY);

-// or in pagefile memory: CreateZip(0, len,ZIP_MEMORY);

-// The final case stores it in memory backed by the system paging file,

-// where the zip may not exceed len bytes. This is a bit friendlier than

-// allocating memory with new[]: it won't lead to fragmentation, and the

-// memory won't be touched unless needed.

-// Note: because pipes don't allow random access, the structure of a zipfile

-// created into a pipe is slightly different from that created into a file

-// or memory. In particular, the compressed-size of the item cannot be

-// stored in the zipfile until after the item itself. (Also, for an item added

-// itself via a pipe, the uncompressed-size might not either be known until

-// after.) This is not normally a problem. But if you try to unzip via a pipe

-// as well, then the unzipper will not know these things about the item until

-// after it has been unzipped. Therefore: for unzippers which don't just write

-// each item to disk or to a pipe, but instead pre-allocate memory space into

-// which to unzip them, then either you have to create the zip not to a pipe,

-// or you have to add items not from a pipe, or at least when adding items

-// from a pipe you have to specify the length.

-

-

-///////////////////////////////////////////////////////////////////////////////

-//

-// ZipAdd()

-//

-// Purpose: Add a file to a zip archive

-//

-// Parameters: hz - handle to an open zip archive

-// dstzn - name used inside the zip archive to identify the file

-// src - for a file (ZIP_FILENAME) this specifies the filename

-// to be added to the archive; for other uses, see below

-// len - for memory (ZIP_MEMORY) this specifies the buffer

-// length; for other uses, this should be 0

-// flags - indicates usage, see below; for files, this will be

-// ZIP_FILENAME

-//

-// Returns: ZRESULT - ZR_OK if success, otherwise some other value

-//

-ZRESULT ZipAdd(HZIP hz, const TCHAR *dstzn, void *src, unsigned int len, DWORD flags);

-// ZipAdd - call this for each file to be added to the zip.

-// dstzn is the name that the file will be stored as in the zip file.

-// The file to be added to the zip can come

-// from a pipe: ZipAdd(hz,"file.dat", hpipe_read,0,ZIP_HANDLE);

-// from a file: ZipAdd(hz,"file.dat", hfile,0,ZIP_HANDLE);

-// from a fname: ZipAdd(hz,"file.dat", "c:\\docs\\origfile.dat",0,ZIP_FILENAME);

-// from memory: ZipAdd(hz,"subdir\\file.dat", buf,len,ZIP_MEMORY);

-// (folder): ZipAdd(hz,"subdir", 0,0,ZIP_FOLDER);

-// Note: if adding an item from a pipe, and if also creating the zip file itself

-// to a pipe, then you might wish to pass a non-zero length to the ZipAdd

-// function. This will let the zipfile store the items size ahead of the

-// compressed item itself, which in turn makes it easier when unzipping the

-// zipfile into a pipe.

-

-

-///////////////////////////////////////////////////////////////////////////////

-//

-// CloseZip()

-//

-// Purpose: Close an open zip archive

-//

-// Parameters: hz - handle to an open zip archive

-//

-// Returns: ZRESULT - ZR_OK if success, otherwise some other value

-//

-ZRESULT CloseZip(HZIP hz);

-// CloseZip - the zip handle must be closed with this function.

-

-

-ZRESULT ZipGetMemory(HZIP hz, void **buf, unsigned long *len);

-// ZipGetMemory - If the zip was created in memory, via ZipCreate(0,ZIP_MEMORY),

-// then this function will return information about that memory block.

-// buf will receive a pointer to its start, and len its length.

-// Note: you can't add any more after calling this.

-

-

-unsigned int FormatZipMessage(ZRESULT code, char *buf,unsigned int len);

-// FormatZipMessage - given an error code, formats it as a string.

-// It returns the length of the error message. If buf/len points

-// to a real buffer, then it also writes as much as possible into there.

-

-

-

-// These are the result codes:

-#define ZR_OK 0x00000000 // nb. the pseudo-code zr-recent is never returned,

-#define ZR_RECENT 0x00000001 // but can be passed to FormatZipMessage.

-// The following come from general system stuff (e.g. files not openable)

-#define ZR_GENMASK 0x0000FF00

-#define ZR_NODUPH 0x00000100 // couldn't duplicate the handle

-#define ZR_NOFILE 0x00000200 // couldn't create/open the file

-#define ZR_NOALLOC 0x00000300 // failed to allocate some resource

-#define ZR_WRITE 0x00000400 // a general error writing to the file

-#define ZR_NOTFOUND 0x00000500 // couldn't find that file in the zip

-#define ZR_MORE 0x00000600 // there's still more data to be unzipped

-#define ZR_CORRUPT 0x00000700 // the zipfile is corrupt or not a zipfile

-#define ZR_READ 0x00000800 // a general error reading the file

-// The following come from mistakes on the part of the caller

-#define ZR_CALLERMASK 0x00FF0000

-#define ZR_ARGS 0x00010000 // general mistake with the arguments

-#define ZR_NOTMMAP 0x00020000 // tried to ZipGetMemory, but that only works on mmap zipfiles, which yours wasn't

-#define ZR_MEMSIZE 0x00030000 // the memory size is too small

-#define ZR_FAILED 0x00040000 // the thing was already failed when you called this function

-#define ZR_ENDED 0x00050000 // the zip creation has already been closed

-#define ZR_MISSIZE 0x00060000 // the indicated input file size turned out mistaken

-#define ZR_PARTIALUNZ 0x00070000 // the file had already been partially unzipped

-#define ZR_ZMODE 0x00080000 // tried to mix creating/opening a zip

-// The following come from bugs within the zip library itself

-#define ZR_BUGMASK 0xFF000000

-#define ZR_NOTINITED 0x01000000 // initialisation didn't work

-#define ZR_SEEK 0x02000000 // trying to seek in an unseekable file

-#define ZR_NOCHANGE 0x04000000 // changed its mind on storage, but not allowed

-#define ZR_FLATE 0x05000000 // an internal error in the de/inflation code

-

-

-

-// e.g.

-//

-// (1) Traditional use, creating a zipfile from existing files

-// HZIP hz = CreateZip("c:\\temp.zip",0,ZIP_FILENAME);

-// ZipAdd(hz,"src1.txt", "c:\\src1.txt",0,ZIP_FILENAME);

-// ZipAdd(hz,"src2.bmp", "c:\\src2_origfn.bmp",0,ZIP_FILENAME);

-// CloseZip(hz);

-//

-// (2) Memory use, creating an auto-allocated mem-based zip file from various sources

-// HZIP hz = CreateZip(0,100000,ZIP_MEMORY);

-// // adding a conventional file...

-// ZipAdd(hz,"src1.txt", "c:\\src1.txt",0,ZIP_FILENAME);

-// // adding something from memory...

-// char buf[1000]; for (int i=0; i<1000; i++) buf[i]=(char)(i&0x7F);

-// ZipAdd(hz,"file.dat", buf,1000,ZIP_MEMORY);

-// // adding something from a pipe...

-// HANDLE hread,hwrite; CreatePipe(&hread,&write,NULL,0);

-// HANDLE hthread = CreateThread(ThreadFunc,(void*)hwrite);

-// ZipAdd(hz,"unz3.dat", hread,0,ZIP_HANDLE);

-// WaitForSingleObject(hthread,INFINITE);

-// CloseHandle(hthread); CloseHandle(hread);

-// ... meanwhile DWORD CALLBACK ThreadFunc(void *dat)

-// { HANDLE hwrite = (HANDLE)dat;

-// char buf[1000]={17};

-// DWORD writ; WriteFile(hwrite,buf,1000,&writ,NULL);

-// CloseHandle(hwrite);

-// return 0;

-// }

-// // and now that the zip is created, let's do something with it:

-// void *zbuf; unsigned long zlen; ZipGetMemory(hz,&zbuf,&zlen);

-// HANDLE hfz = CreateFile("test2.zip",GENERIC_WRITE,CREATE_ALWAYS);

-// DWORD writ; WriteFile(hfz,zbuf,zlen,&writ,NULL);

-// CloseHandle(hfz);

-// CloseZip(hz);

-//

-// (3) Handle use, for file handles and pipes

-// HANDLE hzread,hzwrite; CreatePipe(&hzread,&hzwrite);

-// HANDLE hthread = CreateThread(ZipReceiverThread,(void*)hread);

-// HZIP hz = ZipCreate(hzwrite,ZIP_HANDLE);

-// // ... add to it

-// CloseZip(hz);

-// CloseHandle(hzwrite);

-// WaitForSingleObject(hthread,INFINITE);

-// CloseHandle(hthread);

-// ... meanwhile DWORD CALLBACK ThreadFunc(void *dat)

-// { HANDLE hread = (HANDLE)dat;

-// char buf[1000];

-// while (true)

-// { DWORD red; ReadFile(hread,buf,1000,&red,NULL);

-// // ... and do something with this zip data we're receiving

-// if (red==0) break;

-// }

-// CloseHandle(hread);

-// return 0;

-// }

-//

-

-

-// Now we indulge in a little skullduggery so that the code works whether

-// the user has included just zip or both zip and unzip.

-// Idea: if header files for both zip and unzip are present, then presumably

-// the cpp files for zip and unzip are both present, so we will call

-// one or the other of them based on a dynamic choice. If the header file

-// for only one is present, then we will bind to that particular one.

-HZIP CreateZipZ(void *z,unsigned int len,DWORD flags);

-ZRESULT CloseZipZ(HZIP hz);

-unsigned int FormatZipMessageZ(ZRESULT code, char *buf,unsigned int len);

-bool IsZipHandleZ(HZIP hz);

-BOOL AddFolderContent(HZIP hZip, TCHAR* AbsolutePath, TCHAR* DirToAdd);

-

-#define CreateZip CreateZipZ

-

-#ifdef XUNZIP_H

-#undef CloseZip

-#define CloseZip(hz) (IsZipHandleZ(hz)?CloseZipZ(hz):CloseZipU(hz))

-#else

-#define CloseZip CloseZipZ

-#define FormatZipMessage FormatZipMessageZ

-#endif

-

-

-#endif //XZIP_H